2results about How to "Won't disturb" patented technology

This invention relates to a device and method for testing the airtightness of airbags in air-shield dams, belonging to the field of airtightness testing technology. It includes a main body, an airbag disposed between clamping plates, an injection pipe on one side of the main body, an air outlet on one side of the airbag, a locking assembly between the injection pipe and the air outlet, a stirring assembly inside the injection pipe, and a clamping assembly on one side of the lead screw. This invention achieves automatic opening of the air passage during docking and bidirectional automatic sealing during separation through plug-in self-sealing, preventing gas leakage and blocking impurities such as water vapor and dust from entering the air passage and the airbag interior. Combined with a mechanical locking structure using inclined plane transmission, it can resist the impact of inflation pressure and the tensile force generated by airbag deformation, ensuring that the interface remains secure and does not detach throughout the process. This eliminates external leakage not caused by the airbag itself, ensuring that the test results accurately reflect the airbag's sealing state and significantly reducing the probability of misjudgment.

This invention relates to the field of trenchless replacement technology for buried plastic pipes, specifically to a device and method for replacing buried plastic pipes. A device for replacing buried plastic pipes includes: a cutting disc, comprising a disc body fixed to the inner wall of the cutting disc and an annular cutting edge at the front end of the cutting disc, the inner diameter of the annular cutting edge being larger than the outer diameter of the buried pipe; and a cutting and suction assembly, comprising: a cutting head on the disc body and a spiral channel within the disc body, the disc body being fixed to the inner wall of the cutting disc, and the spiral channel penetrating the disc body. This invention aims to solve the problem that when breaking plastic pipes, the pipes cannot be effectively broken or the broken plastic fragments easily become entangled on the cutting disc body, resulting in low construction efficiency, thereby providing a device and method for replacing buried plastic pipes.